EP0576080B1 - Picture signal processing mode control - Google Patents
Picture signal processing mode control Download PDFInfo
- Publication number
- EP0576080B1 EP0576080B1 EP93201752A EP93201752A EP0576080B1 EP 0576080 B1 EP0576080 B1 EP 0576080B1 EP 93201752 A EP93201752 A EP 93201752A EP 93201752 A EP93201752 A EP 93201752A EP 0576080 B1 EP0576080 B1 EP 0576080B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- picture signal
- signal processing
- processing mode
- mode control
- film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/144—Movement detection
- H04N5/145—Movement estimation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
- H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
- H04N19/51—Motion estimation or motion compensation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
- H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
- H04N19/51—Motion estimation or motion compensation
- H04N19/513—Processing of motion vectors
- H04N19/521—Processing of motion vectors for estimating the reliability of the determined motion vectors or motion vector field, e.g. for smoothing the motion vector field or for correcting motion vectors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
- H04N7/0112—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level one of the standards corresponding to a cinematograph film standard
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/015—High-definition television systems
Definitions
- the invention relates to a method of and apparatus for controlling a picture signal processing mode.
- the picture signal processing mode may indicate whether the picture signal originates from movie-film and, more specifically, how the fields of the picture signal relate to the pictures of the movie-film, or whether motion vectors are reliable enough to allow for a motion-compensated picture signal processing mode.
- the invention further relates to a television signal receiver including such a picture signal processing mode controlling apparatus.
- HDTV High-Definition Television
- US-A-4,864,398 discloses a television standards converter comprising a motion analyzer for analyzing the motion between consecutive fields of an input television signal. Its Fig. 12 shows a comparator receiving motion vectors from three consecutive fields to determine some erroneous conditions and some picture content information. From the comparison it can be determined whether the motion of an object stopped, whether there has been a motion vector calculation error, or whether there exists a continuous motion.
- EP 359 334 A discloses a method of generating picture signal processing mode control signals which indicate whether the picture signal originates from movie-film. It further discloses the indication of whether picture signals originate from movie-film by detecting whether motion is only present per picture period. In another context, it discloses determining first motion vectors for a first field and second motion vectors for a second field.
- US 4 998 287 A compares field n and field n-2 to determine whether the video signal received was derived from film. This document refers to a motion detector.
- the invention provides a picture signal processing control as well as a receiver for television signals using such a picture signal processing control signal, as defined in the independent claims.
- Advantageous embodiments of the invention are defined in the subclaims.
- the invention is based on the recognition that when a picture signal processor already comprises a motion vector estimator for furnishing motion vectors, a simple comparison of the motion vectors estimated for successive fields provides a reliable indication of whether the picture signal originates from film and, more specifically, how the television picture signal fields relate to the movie-film pictures.
- a picture signal processor already comprises a motion vector estimator for furnishing motion vectors
- a simple comparison of the motion vectors estimated for successive fields provides a reliable indication of whether the picture signal originates from film and, more specifically, how the television picture signal fields relate to the movie-film pictures.
- 24 Hz film pictures are usually converted into 50 Hz television fields by scanning each film picture twice, there is no motion between the television fields which correspond to the same film picture, while there will be a finite amount of motion between television fields which do not correspond to the same film picture.
- a comparison of the sum of the lengths of the motion vectors of two successive fields will thus provide sufficient information about the source of the picture signal.
- the transition between two successive film pictures may occur either between an even and an odd television field or between an odd and an even television field, two different film phases are possible.
- the first option is standardized for broadcasting, while television signals on laser vision discs have been recorded by using the second option.
- the option which has been used can easily be detected by a similar observation of the lengths of the motion vectors.
- Fig. 1 shows an embodiment of a first apparatus in accordance with the invention for determining whether picture signals originate from movie-film.
- a picture signal is applied to a motion vector estimator ME.
- the motion vectors estimated by the motion vector estimator ME are applied to a length-determining circuit L, which may determine the true length of the motion vectors by taking the root of the sum of the squares of horizontal and vertical components of the motion vectors, or which may simply sum the absolute values of these components.
- the output of the length determining circuit L is applied to a first summing circuit ⁇ 2T which determines the sum of the motion vectors of two subsequent field periods. This sum is a measure of the amount of activity in the picture signal and is thus called the activity signal.
- the output of the first summing circuit ⁇ 2T is compared to an activity threshold ThA by an activity comparator COMP-A to obtain an activity enable signal.
- the arrangement will only change its decisions about whether the picture signal originates from film if there is sufficient motion in the picture to warrant a reasonably reliable decision.
- the output of the length determining circuit L is also applied to a second summing circuit ⁇ T which determines the sum of the motion vectors of the present field period.
- the output of the second summing circuit ⁇ T is delayed by a field period T by a delay circuit D T which furnishes the summed vector lengths of a previous field period.
- the output of the delay circuit D T is multiplied by 1-Th and by 1+Th so as to ensure that a decision that the picture fields originate from movie-film is only taken if the summed vector length of the present field is smaller than the summed vector length of the previous field by more than a first given threshold or if the summed vector length of the present field is larger than the summed vector length of the previous field by more than a second given threshold.
- the output of the second summing circuit ⁇ T is applied to first inputs of first and second comparators COMP1 and COMP2, whose second inputs are coupled to the output of the delay circuit D T through multipliers which multiply by 1-Th and 1+Th, respectively.
- a logic OR-circuit combines the outputs of the comparators COMP1 and COMP2.
- the output of the logic OR-circuit is applied to a non-inverting input of a first logic AND-circuit AND1 and to an inverting input of a second logic AND-circuit AND2, which logic AND-circuits further receive the activity enable signal from the comparator COMP-A.
- the output of the first logic AND-circuit AND1 is coupled to a set input S of a set-reset flipflop FF.
- the output of the second logic AND-circuit AND2 is coupled to a reset input R of the set-reset flipflop FF.
- a data output D of the flipflop FF supplies a film indication signal F.
- the data output D of the flipflop FF is coupled to a clock input of a D-flipflop DFF, whose data input is coupled to the output of the first comparator COMP1.
- the D-flipflop DFF supplies a transition mode indication signal M which is positive if the transition between two film pictures is between an even and an odd television field.
- the indication signals F and M can be applied for controlling the operation of a subsequent picture signal processing unit.
- Fig. 1 operates as follows: if the summed vector lengths of two successive fields do not differ too much, the output of the logic OR-circuit will be logic zero, and the flipflop FF will be reset to indicate that the television picture fields do not originate from film. If on the other hand, either one of the comparators COMP1 and COMP2 indicates a difference between the summed vector lengths by more than a given threshold, the output of the logic OR-circuit will be logic one, and the flipflop FF will be set to indicate that the television picture fields originate from film.
- a positive output of comparator COMP1 which indicates that the vectors of the present even field to the previous odd field are smaller than the vectors of the previous odd field to its preceding even field, also indicates that the present even field and the previous odd field correspond to the same film picture, so that the transition between two film pictures will take place between the present even field and the next odd field.
- Such a positive output of the first comparator can thus easily be used to indicate that the movie-film source material is scanned in the manner standardized for broadcasting.
- the comparisons are preferably related to the total amount of motion in the picture, which can very simply be determined by adding the motion vector lengths of a television frame period. Switching between a movie-film adapted processing mode and a non-movie-film adapted processing mode is preferably only made when there is enough motion in the picture to warrant a reliable decision. As there will be no motion between the two television fields which originate from the same movie-film picture, the presence of movie-film originated television signals can very simply be determined by comparing the sums of the motion vector lengths of two field periods.
- movie-film originated picture signals can be deemed to be present when the sum of the motion vector lengths of one field does not differ from the sum of the motion vector lengths of the other field by more than given thresholds.
- These thresholds are preferably related to the sum of the motion vector lengths, which can easily be obtained by multiplying the vector length sum of one of the fields by 1-Th and by 1+Th to obtain the range between which the vector length sum of the other field should be when non-movie-film originated picture signals are present.
Description
The invention relates to a method of and apparatus for controlling a
picture signal processing mode. The picture signal processing mode may indicate
whether the picture signal originates from movie-film and, more specifically, how the
fields of the picture signal relate to the pictures of the movie-film, or whether motion
vectors are reliable enough to allow for a motion-compensated picture signal processing
mode. The invention further relates to a television signal receiver including such a
picture signal processing mode controlling apparatus.
Many recent proposals for novel High-Definition Television (HDTV)
systems include the requirement that a control signal is to be transmitted along with the
HDTV signal which gives an indication about the origin of the picture signal, because
in some respects, picture signals originating from movie-film require a different
treatment, i.e. picture signal processing mode, than picture signals which are picked up
by a camera. For similar reasons, up-conversion algorithms to be used in Improved
Definition Television (IDTV) receivers require a picture signal processing mode
control signal which provides information about the origin of the picture signal. Up till
now, no reliable and yet simple method of automatically detecting whether the picture
signal originates from movie-film has been reported. Another problem met in IDTV
receivers is that motion-compensated picture signal processing methods are potentially
very suitable to provide an improved display quality of the picture signal, but that
artifacts caused by motion vector estimation errors are very disturbing. Consequently,
there is a need to determine when motion vectors are reliable enough to allow for a
motion-compensated picture signal processing mode, and when the motion-compensated
picture signal processing mode should be switched off in view of the unreliability of the
motion vectors.
US-A-4,864,398 discloses a television standards converter comprising a
motion analyzer for analyzing the motion between consecutive fields of an input
television signal. Its Fig. 12 shows a comparator receiving motion vectors from three
consecutive fields to determine some erroneous conditions and some picture content
information. From the comparison it can be determined whether the motion of an
object stopped, whether there has been a motion vector calculation error, or whether
there exists a continuous motion.
EP 359 334 A discloses a method of generating picture signal processing
mode control signals which indicate whether the picture signal originates from movie-film.
It further discloses the indication of whether picture signals originate from movie-film
by detecting whether motion is only present per picture period. In another context, it
discloses determining first motion vectors for a first field and second motion vectors for
a second field.
US 4 998 287 A compares field n and field n-2 to determine whether the
video signal received was derived from film. This document refers to a motion detector.
It is, inter alia, an object of the invention to provide a simple and reliable
picture signal processing control. For this purpose, the invention provides a picture signal
processing control as well as a receiver for television signals using such a picture signal
processing control signal, as defined in the independent claims. Advantageous
embodiments of the invention are defined in the subclaims.
The invention is based on the recognition that when a picture signal
processor already comprises a motion vector estimator for furnishing motion vectors, a
simple comparison of the motion vectors estimated for successive fields provides a reliable
indication of whether the picture signal originates from film and, more specifically, how
the television picture signal fields relate to the movie-film pictures. As 24 Hz film pictures
are usually converted into 50 Hz television fields by scanning each film picture twice, there
is no motion between the television fields which correspond to the same film picture, while
there will be a finite amount of motion between television fields which do not correspond
to the same film picture. A comparison of the sum of the lengths of the motion vectors of
two successive fields will thus provide sufficient information about the source of the
picture signal.
As the transition between two successive film pictures may occur either
between an even and an odd television field or between an odd and an even television field,
two different film phases are possible. The first option is standardized for broadcasting,
while television signals on laser vision discs have been recorded by using the second
option. The option which has been used can easily be detected by a similar observation of
the lengths of the motion vectors.
These and other aspects of the invention will be apparent from and
elucidated with reference to the embodiments described hereinafter.
In the drawings:
Fig. 1 shows an embodiment of a first apparatus in accordance with the
invention for determining whether picture signals originate from movie-film.
In Fig. 1, a picture signal is applied to a motion vector estimator ME.
The motion vectors estimated by the motion vector estimator ME are applied to a
length-determining circuit L, which may determine the true length of the motion
vectors by taking the root of the sum of the squares of horizontal and vertical
components of the motion vectors, or which may simply sum the absolute values of
these components. The output of the length determining circuit L is applied to a first
summing circuit Σ2T which determines the sum of the motion vectors of two subsequent
field periods. This sum is a measure of the amount of activity in the picture signal and
is thus called the activity signal. The output of the first summing circuit Σ2T is
compared to an activity threshold ThA by an activity comparator COMP-A to obtain an
activity enable signal. The arrangement will only change its decisions about whether the
picture signal originates from film if there is sufficient motion in the picture to warrant
a reasonably reliable decision.
The output of the length determining circuit L is also applied to a second
summing circuit ΣT which determines the sum of the motion vectors of the present field
period. The output of the second summing circuit ΣT is delayed by a field period T by
a delay circuit DT which furnishes the summed vector lengths of a previous field
period. The output of the delay circuit DT is multiplied by 1-Th and by 1+Th so as to
ensure that a decision that the picture fields originate from movie-film is only taken if
the summed vector length of the present field is smaller than the summed vector length
of the previous field by more than a first given threshold or if the summed vector
length of the present field is larger than the summed vector length of the previous field
by more than a second given threshold. To this end, the output of the second summing
circuit ΣT is applied to first inputs of first and second comparators COMP1 and
COMP2, whose second inputs are coupled to the output of the delay circuit DT through
multipliers which multiply by 1-Th and 1+Th, respectively. A logic OR-circuit
combines the outputs of the comparators COMP1 and COMP2. The output of the logic
OR-circuit is applied to a non-inverting input of a first logic AND-circuit AND1 and to
an inverting input of a second logic AND-circuit AND2, which logic AND-circuits
further receive the activity enable signal from the comparator COMP-A. The output of
the first logic AND-circuit AND1 is coupled to a set input S of a set-reset flipflop FF.
The output of the second logic AND-circuit AND2 is coupled to a reset input R of the
set-reset flipflop FF. A data output D of the flipflop FF supplies a film indication
signal F.
To determine whether the transition between two successive film pictures
is between an even and an odd field or between an odd and an even field, the data
output D of the flipflop FF is coupled to a clock input of a D-flipflop DFF, whose data
input is coupled to the output of the first comparator COMP1. The D-flipflop DFF
supplies a transition mode indication signal M which is positive if the transition
between two film pictures is between an even and an odd television field. The
indication signals F and M can be applied for controlling the operation of a subsequent
picture signal processing unit.
The arrangement shown in Fig. 1 operates as follows: if the summed
vector lengths of two successive fields do not differ too much, the output of the logic
OR-circuit will be logic zero, and the flipflop FF will be reset to indicate that the
television picture fields do not originate from film. If on the other hand, either one of
the comparators COMP1 and COMP2 indicates a difference between the summed
vector lengths by more than a given threshold, the output of the logic OR-circuit will
be logic one, and the flipflop FF will be set to indicate that the television picture fields
originate from film. When the comparisons are made during even field periods, a
positive output of comparator COMP1 which indicates that the vectors of the present
even field to the previous odd field are smaller than the vectors of the previous odd
field to its preceding even field, also indicates that the present even field and the
previous odd field correspond to the same film picture, so that the transition between
two film pictures will take place between the present even field and the next odd field.
Such a positive output of the first comparator can thus easily be used to indicate that
the movie-film source material is scanned in the manner standardized for broadcasting.
The above description clearly shows that a simple comparison of motion
vectors determined for successive fields can easily be used to determine the picture
signal processing mode and, more specifically, whether and how the picture signal
processing should be adapted for movie-film originated pictures.
The comparisons are preferably related to the total amount of motion in the
picture, which can very simply be determined by adding the motion vector lengths of a
television frame period. Switching between a movie-film adapted processing mode and
a non-movie-film adapted processing mode is preferably only made when there is
enough motion in the picture to warrant a reliable decision.
As there will
be no motion between the two television fields which originate from the same movie-film
picture, the presence of movie-film originated television signals can very simply
be determined by comparing the sums of the motion vector lengths of two field periods.
More specifically, movie-film originated picture signals can be deemed to be present
when the sum of the motion vector lengths of one field does not differ from the sum of
the motion vector lengths of the other field by more than given thresholds. These
thresholds are preferably related to the sum of the motion vector lengths, which can
easily be obtained by multiplying the vector length sum of one of the fields by 1-Th
and by 1+Th to obtain the range between which the vector length sum of the other
field should be when non-movie-film originated picture signals are present.
Claims (9)
- A method of generating picture signal processing mode control signals (F, M), the method comprising the steps of:determining (ME) first motion vectors for a first field, and second motion vectors for a successive second field of a picture signal; andcomparing (L, ΣT, DT, COMP1, COMP2) said first and second motion vectors to obtain picture signal processing mode control signals (F, M) that indicate whether said picture signal originates from movie-film.
- A method as claimed in claim 1, wherein said comparing step comprises the further steps of:determining (L, Σ2T) a sum of lengths of said first and second motion vectors to obtain an activity signal; andchanging (COMP-A, AND1, AND2, FF) said picture signal processing mode control signals (F, M) only when said activity signal has a predetermined relation (COMP-A) with an activity threshold (ThA).
- A method as claimed in claim 2, wherein said picture signal processing mode control signals (F, M) are only changed when said activity signal exceeds (COMP-A) said activity threshold (ThA).
- A method as claimed in claim 1, wherein said comparing step comprises the further steps of:determining (ΣT, DT) a first total of lengths of said first motion vectors, and a second total of lengths of said second motion vectors; andchanging said picture signal processing mode control signals (F, M) to indicate movie-film when (COMP1, COMP2, OR) said first and second totals differ by more than given thresholds (Th), and to indicate non-movie-film when said first and second totals differ by less than said given thresholds (Th).
- A method as claimed in claim 4 wherein said given thresholds (Th) depend on said first or said second total (ΣT).
- A method as claimed in claim 4, wherein said picture signal processing mode control signals (F, M) indicate a first type of movie-film originating picture signals when said first total is smaller than said second total by more than a first given threshold (Th), while said picture signal processing mode control signals (F, M) indicate a second type of movie-film originating picture signals when said first total is larger than said second total by more than a second given threshold (Th).
- A method as claimed in claim 1, wherein said picture signal processing mode control signals (F, M) indicate how the fields of the picture signal relate to pictures of the movie film.
- An apparatus for generating picture signal processing mode control signals (F, M), the apparatus comprising:means (ME) for determining first motion vectors for a first field, and second motion vectors for a successive second field of a picture signal; andmeans (L, ΣT, DT, COMP1, COMP2) for comparing said first and second motion vectors to obtain picture signal processing mode control signals (F, M) that indicate whether said picture signal originates from movie-film.
- A receiver for television signals, comprising:characterized in that said enhancing means include an apparatus for generating picture signal processing mode control signals as defined in claim 8.means for receiving and decoding said television signals to obtain picture signals;means coupled to said receiving and decoding means for enhancing said picture signals;
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP93201752A EP0576080B1 (en) | 1992-06-26 | 1993-06-18 | Picture signal processing mode control |
| EP02075118A EP1217829B1 (en) | 1992-06-26 | 1993-06-18 | Picture signal processing mode control |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP92201895 | 1992-06-26 | ||
| EP92201895 | 1992-06-26 | ||
| EP93201752A EP0576080B1 (en) | 1992-06-26 | 1993-06-18 | Picture signal processing mode control |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02075118.6 Division-Into | 2002-01-10 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0576080A2 EP0576080A2 (en) | 1993-12-29 |
| EP0576080A3 EP0576080A3 (en) | 1994-06-22 |
| EP0576080B1 true EP0576080B1 (en) | 2002-09-18 |
Family
ID=26131501
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02075118A Expired - Lifetime EP1217829B1 (en) | 1992-06-26 | 1993-06-18 | Picture signal processing mode control |
| EP93201752A Expired - Lifetime EP0576080B1 (en) | 1992-06-26 | 1993-06-18 | Picture signal processing mode control |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02075118A Expired - Lifetime EP1217829B1 (en) | 1992-06-26 | 1993-06-18 | Picture signal processing mode control |
Country Status (1)
| Country | Link |
|---|---|
| EP (2) | EP1217829B1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9404190D0 (en) * | 1994-03-04 | 1994-04-20 | Snell & Wilcox Limited Video | Video signal processing |
| US5452011A (en) * | 1994-03-14 | 1995-09-19 | Thomson Consumer Electronics, Inc. | Method and device for film-mode detection and field elimination |
| US5406333A (en) * | 1994-03-14 | 1995-04-11 | Thomson Consumer Electronics, Inc. | Method and device for film-mode detection |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4998287A (en) * | 1988-10-14 | 1991-03-05 | General Instrument Corporation | Determination of sequential positions of video fields derived from film |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0294957B1 (en) * | 1987-06-09 | 1995-04-12 | Sony Corporation | Motion vector processing in digital television images |
| EP0359334B1 (en) * | 1988-09-16 | 1995-12-06 | Koninklijke Philips Electronics N.V. | High-definition television system |
| US4881125A (en) * | 1988-10-14 | 1989-11-14 | General Instrument Corporation | Progressive scan display of video derived from film |
| GB9001079D0 (en) * | 1990-01-17 | 1990-03-14 | Avesco Plc | Standards conversion |
| US5428399A (en) * | 1991-04-15 | 1995-06-27 | Vistek Electronics Limited | Method and apparatus for image translation with improved motion compensation |
-
1993
- 1993-06-18 EP EP02075118A patent/EP1217829B1/en not_active Expired - Lifetime
- 1993-06-18 EP EP93201752A patent/EP0576080B1/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4998287A (en) * | 1988-10-14 | 1991-03-05 | General Instrument Corporation | Determination of sequential positions of video fields derived from film |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1217829B1 (en) | 2005-09-07 |
| EP0576080A2 (en) | 1993-12-29 |
| EP1217829A2 (en) | 2002-06-26 |
| EP0576080A3 (en) | 1994-06-22 |
| EP1217829A3 (en) | 2002-08-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5365280A (en) | Method and apparatus for discriminating between movie film and non-movie film and generating a picture signal processing mode control signal | |
| US5748231A (en) | Adaptive motion vector decision method and device for digital image stabilizer system | |
| JP3011267B2 (en) | Video stabilizing apparatus and method using bit plane matching | |
| EP0624032B1 (en) | Video format conversion apparatus and method | |
| US8218083B2 (en) | Noise reducer, noise reducing method, and video signal display apparatus that distinguishes between motion and noise | |
| EP0720355B1 (en) | Apparatus for determining motion vectors through the use of an adaptive median filtering technique | |
| EP1665808B1 (en) | Temporal interpolation of a pixel on basis of occlusion detection | |
| US20050249282A1 (en) | Film-mode detection in video sequences | |
| US6157412A (en) | System for identifying video fields generated from film sources | |
| US6404461B1 (en) | Method for detecting static areas in a sequence of video pictures | |
| EP1592258A1 (en) | Motion estimation employing adaptive spatial update vectors | |
| US20050259950A1 (en) | Film mode correction in still areas | |
| JPH08228356A (en) | Processing system for picture representing signal | |
| JP4092778B2 (en) | Image signal system converter and television receiver | |
| US6965414B2 (en) | Apparatus for detecting telecine conversion method of video signal | |
| EP0720356B1 (en) | Apparatus for determining motion vectors | |
| EP0576080B1 (en) | Picture signal processing mode control | |
| US7593059B2 (en) | Image conversion device and method | |
| US6922214B1 (en) | Video signal processing | |
| US7714891B2 (en) | Imaging apparatus | |
| JP2004320279A (en) | Dynamic image time axis interpolation method and dynamic image time axis interpolation apparatus | |
| KR970004927B1 (en) | Adaptive motion decision system for digital image stabilizer based on edge pattern matching | |
| US7039111B2 (en) | Film mode detecting apparatus and method thereof | |
| JP2004320278A (en) | Dynamic image time axis interpolation method and dynamic image time axis interpolation apparatus | |
| EP1233618A1 (en) | Method and device for detecting reliability of a field of movement vectors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE FR GB IT |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): DE FR GB IT |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: N.V. PHILIPS' GLOEILAMPENFABRIEKEN |
|
| 17P | Request for examination filed |
Effective date: 19941222 |
|
| 17Q | First examination report despatched |
Effective date: 19961230 |
|
| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: KONINKLIJKE PHILIPS ELECTRONICS N.V. |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
| REF | Corresponds to: |
Ref document number: 69332298 Country of ref document: DE Date of ref document: 20021024 |
|
| ET | Fr: translation filed | ||
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed |
Effective date: 20030619 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20100709 Year of fee payment: 18 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20100616 Year of fee payment: 18 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20100616 Year of fee payment: 18 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20110618 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110618 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R084 Ref document number: 69332298 Country of ref document: DE Effective date: 20110426 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20120229 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: CL Name of requester: KONINKLIJKE PHILIPS ELECTRONICS N.V., NL Effective date: 20120305 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110630 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP Owner name: TRIDENT MICROSYSTEMS (FAR EAST) LTD., KY Effective date: 20120418 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110618 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20121128 Year of fee payment: 20 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R082 Ref document number: 69332298 Country of ref document: DE Representative=s name: EPPING HERMANN FISCHER, PATENTANWALTSGESELLSCH, DE |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R082 Ref document number: 69332298 Country of ref document: DE Representative=s name: EPPING HERMANN FISCHER, PATENTANWALTSGESELLSCH, DE Effective date: 20130304 Ref country code: DE Ref legal event code: R081 Ref document number: 69332298 Country of ref document: DE Owner name: NXP B.V., NL Free format text: FORMER OWNER: TRIDENT MICROSYSTEMS (FAR EAST) LTD., GRAND CAYMAN, KY Effective date: 20130304 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 69332298 Country of ref document: DE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20130619 |